The right-hander needed just one rehab appearance this time before joining the team, throwing nine pitches in a perfect inning of relief for Class A Advanced Stockton on Saturday.
He'll likely be eased back into his typical setup role.
"He's full-go, yet he's been off for a little bit and had the one rehab game, so we'll try to ease him back in," said manager Bob Melvin. "We won't stick him in the ninth with a one-run lead. Now, you say that, and he ends up coming in during an extra-inning game with the bases loaded or something like that, but the plan is to ease him in one time before we get him into a prominent role."
Cook allowed just one earned run in 9 1/3 innings over his first nine appearances this season before allowing three in his last three games leading up to the injury.
Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.